Near-field direct-writing technology-based micronano resistor strain gauge fabrication method and strain gauge

Abstract

The invention relates to the field of strain gauges, in particular to a near-field direct-writing technology-based micronano resistor strain gauge fabrication method and a strain gauge. The method comprises the following steps of 1) placing a strain gauge substrate on a mobile platform; 2) inputting a sensitive gate shape of the strain gauge by a direct-writing device, and generating a mobile platform control code by a system; 3) injecting nanometer silver paste into an injector, connecting a high-voltage power supply, connecting a negative voltage to a metal pin, and allowing the strain gaugesubstrate to be connected with ground or connecting a positive voltage to the strain gauge substrate; 4) taking the written strain gauge substrate out of the mobile platform, drying the strain gaugesubstrate in a drying oven for 5 hours, taking out and observing morphology, and testing a resistance value; 5) fixing the tested strain gauge by a binding agent, and covering an upper layer with an epoxy resin film; and 6) welding a leading-out line after the binding agent is dried. By the method, an individual micronano strain gauge can be made according to a demand, the process is flexible, moreover, the two processes of alloy foil fabrication and pasting are omitted, and the cost is low.

Description

technical field [0001] The invention relates to the field of strain gauges, in particular to a method for manufacturing micro-nano resistance strain gauges and strain gauges based on near-field direct writing technology. Background technique [0002] Near-field direct writing technology is a method of generating micro-nano fibers from polymer liquid (solution or melt) under the action of a high-voltage electric field, which provides a method for large-scale production of nano-fibers. The near-field direct writing technology uses the electric field force to stretch the polymer jet. In the extremely high field strength, the combination of the electric field force and the Coulomb force realizes high stretching and point-to-point transmission of the polymer jet, and the diameter of the jet gradually decreases. Forming nanometer-sized fibers, the formed micro-nanofibrous material (electrospun membrane) can be directly adsorbed onto a collection substrate. [0003] Strain gauges ...

AI Technical Summary

Problems solved by technology

It can be seen that the traditional process is relatively cumbersome, and these conventional manufacturing methods are difficult to meet the needs of customized strain gauges in consumer electronics, aerospace, automotive industry, defense industry and other fields.

Images